TPS61170DRVR Detailed explanation of pin function specifications and circuit principle instructions
The "TPS61170DRVR" is a product from Texas Instruments (TI). It is a part of their family of boost converters and is typically used for Power ing O LED displays, battery-powered devices, and other applications where a small, efficient boost converter is needed.
Package Type for TPS61170DRVR
The TPS61170DRVR typically comes in a VQFN-20 (Very Thin Quad Flat No-lead) package. The "20" in the part number refers to the 20 pins or leads that this package has.
Pin Function Description
Here’s a detailed list of all the pins for the TPS61170DRVR package and their respective functions:
Pin Number Pin Name Pin Function Description 1 GND Ground connection for the device. Connect to the system ground to complete the circuit. 2 FB Feedback input. This pin is used to sense the output voltage through an external voltage divider. The voltage at this pin is compared with the internal reference to regulate output voltage. 3 VIN Input voltage supply pin. This is where the device is powered. The recommended input range is typically from 2.5V to 5.5V. 4 EN Enable pin. This pin is used to enable or disable the device. When pulled high, the device is enabled, and when pulled low, the device is disabled. 5 SW1 Switch node 1. This is the internal connection to the inductor and is used for switching operations during the boost converter’s operation. 6 SW2 Switch node 2. This pin connects to an internal transistor that helps in regulating the voltage during the conversion process. 7 PGND Power ground. This pin should be connected directly to the ground plane and handles the current path for power switching. 8 L1 Inductor connection pin. This is where the external inductor is connected to the chip. The inductor stores and transfers energy during the conversion process. 9 VOUT Output voltage. This pin provides the regulated output voltage that is being boosted from the input voltage. 10 EN_SNS Enable pin for the external voltage-sensing circuit. This pin allows an external sensor to enable or disable the device. 11 SDA Serial Data Line. Used for I2C communication to configure or read data from the device. 12 SCL Serial Clock Line. Used for I2C communication along with SDA. 13 BOOT Bootstrap capacitor pin. This pin connects to the bootstrap capacitor used to supply the high-side gate driver with the necessary voltage for operation. 14 VCC Input supply for internal logic. Typically connected to a 3.3V or 5V rail depending on the specific device configuration. 15 FB2 Feedback pin for output voltage regulation. This pin is used in more complex configurations, allowing external feedback to be connected for more precision in regulating the output voltage. 16 AGND Analog ground connection. This pin should be connected to the same ground as the rest of the analog circuitry to ensure stable operation. 17 COMP Compensation pin. This is used for external compensation to optimize the performance of the feedback control loop. 18 DRV Driver pin. This pin is connected to the gate of the internal switch driver and is used to control switching actions. 19 DCDC DC/DC Converter pin. This pin connects to the internal DC-DC converter circuit that powers the internal logic and supports efficient switching. 20 OUT_SNS Output sensing pin. This pin senses the output voltage and helps ensure that the voltage stays within the required limits.20 FAQ (Frequently Asked Questions) for TPS61170DRVR
Q: What is the input voltage range for the TPS61170DRVR? A: The input voltage range for the TPS61170DRVR is typically 2.5V to 5.5V.
Q: How do I enable the TPS61170DRVR? A: The device can be enabled by pulling the EN pin high.
Q: How do I disable the TPS61170DRVR? A: The device can be disabled by pulling the EN pin low.
Q: What is the output voltage of the TPS61170DRVR? A: The output voltage is regulated based on the feedback pin (FB) and can be adjusted according to your system requirements.
Q: What is the function of the SW1 pin on the TPS61170DRVR? A: SW1 is the switch node 1 pin, which is used for the switching operation and connects to the inductor during the boost converter operation.
Q: How do I connect the external inductor for the TPS61170DRVR? A: The external inductor should be connected to the L1 pin on the TPS61170DRVR.
Q: Can I use the TPS61170DRVR for low-voltage applications? A: Yes, the TPS61170DRVR is suitable for low-voltage applications with an input range starting from 2.5V.
Q: What is the function of the FB pin on the TPS61170DRVR? A: The FB pin is used to sense the output voltage through a voltage divider, which the device uses to regulate the output voltage.
Q: What kind of external components do I need for the TPS61170DRVR? A: You will need an external inductor, capacitors, resistors for voltage feedback, and possibly a compensation network for optimal performance.
Q: Can I monitor the output voltage with the TPS61170DRVR? A: Yes, the output voltage can be monitored using the OUT_SNS pin.
Q: How do I configure the TPS61170DRVR using I2C? A: You can configure the TPS61170DRVR using the I2C communication pins SDA and SCL for reading and writing configuration settings.
Q: What is the BOOT pin used for? A: The BOOT pin is used to connect a bootstrap capacitor, which is needed to supply the high-side gate driver with voltage.
Q: What should I do if the TPS61170DRVR is not working as expected? A: First, check the input voltage range and ensure all external components, such as the inductor and capacitors, are correctly placed.
Q: How can I ensure stable operation with the TPS61170DRVR? A: Use the COMP pin for external compensation to optimize the feedback control loop for stable operation.
Q: What is the typical efficiency of the TPS61170DRVR? A: The efficiency is typically around 90% depending on the specific conditions and external components used.
Q: What is the recommended operating temperature range for the TPS61170DRVR? A: The recommended operating temperature range is from -40°C to 125°C.
Q: How can I protect the TPS61170DRVR from overvoltage? A: Use appropriate voltage dividers and protection circuitry to ensure that the feedback voltage does not exceed the recommended values.
Q: How do I calculate the output voltage for the TPS61170DRVR? A: The output voltage is determined by the feedback resistor network connected to the FB pin. The voltage divider ratio will set the output.
Q: Can I use the TPS61170DRVR for high-current applications? A: The TPS61170DRVR is designed for low to medium current applications and can handle output currents typically up to 1A, depending on the configuration.
Q: What is the purpose of the VCC pin on the TPS61170DRVR? A: The VCC pin powers the internal logic of the device and should be connected to a stable 3.3V or 5V supply.
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